Electronic cigarette power supply



FIG. 1 is a top, front and left perspective view of my new design for an electronic cigarette power supply.

FIG. 2 is a top, back and right perspective view.

FIG. 3 is a right side view. The left side view is a mirror image of the right side view.

FIG. 4 is a top view. The bottom view is a mirror image of the top view.

FIG. 5 is a front view; and,

FIG. 6 is a back view.

The portions of the drawings shown in dashed broken lines form no part of the claimed design. 

The ornamental design for an electronic cigarette power supply, as shown and described. 